Sony ES variable line ouput quality

2+2
2+2 Posts: 546
edited January 2006 in Electronics
Any of you guys out there use, or tried using the variable line output from Sony ES players by directly connecting the CD player to the inputs of a power amp? How are the little pre/amps in these ES players sound quality wise?

I am thinking of skipping the integrated idea and just adding substantial quality power to my system 2....thx for any insight.
System 1: Martin Logan Vantage, Rotel RC 1070, B&K Reference 200.2, Music Hall DAC 15.2, Yamaha 2300

System 2: LSi15 w/db840, Marantz SR8400, Rotel 1080, RM6800 (C&S), Sony X2020ES

System 3: LSi7, Yamaha SW215, Music Hall Maven, Music Hall MMF CD25 w/627opamps

System 4: RTi100, Harman Kardon AVR 230, Panasonic DVD